[project @ 2001-08-04 06:19:54 by ken]

[ghc-hetmet.git] / ghc / lib / std / Complex.lhs

diff --git a/ghc/lib/std/Complex.lhs b/ghc/lib/std/Complex.lhs
index 53f0f53..748d571 100644 (file)
--- a/ghc/lib/std/Complex.lhs
+++ b/ghc/lib/std/Complex.lhs
@@ -1,5 +1,7 @@
+% -----------------------------------------------------------------------------
+% $Id: Complex.lhs,v 1.5 2000/06/30 13:39:35 simonmar Exp $
 %
-% (c) The AQUA Project, Glasgow University, 1994-1999
+% (c) The University of Glasgow, 1994-2000
 %
 
 \section[Complex]{Module @Complex@}
@@ -89,6 +91,8 @@ phase (x:+y)   = atan2 y x
 
 \begin{code}
 instance  (RealFloat a) => Num (Complex a)  where
+    {-# SPECIALISE instance Num (Complex Float) #-}
+    {-# SPECIALISE instance Num (Complex Double) #-}
     (x:+y) + (x':+y')  =  (x+x') :+ (y+y')
     (x:+y) - (x':+y')  =  (x-x') :+ (y-y')
     (x:+y) * (x':+y')  =  (x*x'-y*y') :+ (x*y'+y*x')
@@ -99,6 +103,8 @@ instance  (RealFloat a) => Num (Complex a)  where
     fromInteger n      =  fromInteger n :+ 0
 
 instance  (RealFloat a) => Fractional (Complex a)  where
+    {-# SPECIALISE instance Fractional (Complex Float) #-}
+    {-# SPECIALISE instance Fractional (Complex Double) #-}
     (x:+y) / (x':+y')  =  (x*x''+y*y'') / d :+ (y*x''-x*y'') / d
                           where x'' = scaleFloat k x'
                                 y'' = scaleFloat k y'
@@ -108,6 +114,8 @@ instance  (RealFloat a) => Fractional (Complex a)  where
     fromRational a     =  fromRational a :+ 0
 
 instance  (RealFloat a) => Floating (Complex a)        where
+    {-# SPECIALISE instance Floating (Complex Float) #-}
+    {-# SPECIALISE instance Floating (Complex Double) #-}
     pi             =  pi :+ 0
     exp (x:+y)     =  expx * cos y :+ expx * sin y
                       where expx = exp x